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    Subject[PATCH 4.9 151/212] net/nfc/rawsock.c: add CAP_NET_RAW check.
    Date
    From: Qingyu Li <ieatmuttonchuan@gmail.com>

    [ Upstream commit 26896f01467a28651f7a536143fe5ac8449d4041 ]

    When creating a raw AF_NFC socket, CAP_NET_RAW needs to be checked first.

    Signed-off-by: Qingyu Li <ieatmuttonchuan@gmail.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    net/nfc/rawsock.c | 7 +++++--
    1 file changed, 5 insertions(+), 2 deletions(-)

    --- a/net/nfc/rawsock.c
    +++ b/net/nfc/rawsock.c
    @@ -344,10 +344,13 @@ static int rawsock_create(struct net *ne
    if ((sock->type != SOCK_SEQPACKET) && (sock->type != SOCK_RAW))
    return -ESOCKTNOSUPPORT;

    - if (sock->type == SOCK_RAW)
    + if (sock->type == SOCK_RAW) {
    + if (!capable(CAP_NET_RAW))
    + return -EPERM;
    sock->ops = &rawsock_raw_ops;
    - else
    + } else {
    sock->ops = &rawsock_ops;
    + }

    sk = sk_alloc(net, PF_NFC, GFP_ATOMIC, nfc_proto->proto, kern);
    if (!sk)

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